[gnome-calendar] Changin autoconf required to match jhbuild.

[Erick PÃrez Castellanos <erickpc src gnome org>]

commit dad2e4115c08f6d4b0a9e3c461a1d52fa444ccf5
Author: Erick PÃrez Castellanos <erick red gmail com>
Date:   Mon Jun 4 06:55:28 2012 -0400

    Changin autoconf required to match jhbuild.
    
    Added .gdb_history

 .gitignore   |    1 +
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 0efa877..1fb470b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -70,3 +70,4 @@ gnome_calendar.anjuta
 /missing
 /mkinstalldirs
 Debug*
+.gdb_history
diff --git a/configure.ac b/configure.ac
index 875b253..f449b7b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl -*- mode: m4 -*-
-AC_PREREQ([2.69])
+AC_PREREQ([2.68])
 AC_INIT([gnome-calendar],[0.0.2],[],[gnome-calendar])
 
 AC_CONFIG_HEADERS([config/config.h])